σαρδόνυξ G4557
sardónyx · sar-don'-oox · Noun Masculine
from the base of σάρδιος and (the nail of a finger; hence the "onyx" stone); a "sardonyx", i.e. the gem so called:-- sardonyx.
1 Occurrence in the King James Bible
Revelation 21:20The fifth, sardonyx; the sixth, sardius; the seventh, chrysolite; the eighth, beryl; the ninth, a topaz; the tenth, a chrysoprasus; the eleventh, a jacinth; the twelfth, an amethyst.